Toward the end of 2006, Public Employees for Environmental Responsibility — "a national non-profit alliance of local, state and federal scientists, law enforcement officers, land managers and other professionals dedicated to upholding environmental laws and values" — charged the National Park Service with stalling on a promised review of a creationist book sold at the bookstores at Grand Canyon National Park. Although the park's bookstores are operated by a separate non-profit organization, the Grand Canyon Association, the National Park Service is responsible for approving the items that are sold there. In August 2003, the NPS approved the sale of Grand Canyon: A Different View, edited by Tom Vail and published by Master Books, the publishing arm of the Institute for Creation Research. A Different View expounds a young-earth creationist view of the geology of the canyon, and proclaims, "all contributions have been peer-reviewed to ensure a consistent and biblical perspective." In his review of the book (RNCSE 2004 Jan/Feb; 24 [1]: 33-6), the geologist Wilfred Elders described it as "'Exhibit A' of a new, slick strategy by biblical literalists to proselytize using a beautifully illustrated, multi-authored book about a spectacular and world-famous geological feature," adding, "Allowing the sale of this book within the National Park was unfortunate. In the minds of some buyers, this could imply NPS approval of young-earth creationists and their religious proselytizing."

After the sale of A Different View was approved, the superintendent of the park appealed to the NPS headquarters for "a review of the book in terms of its appropriateness," and the Chief of the Park Service's Geologic Resources Division recommended its removal, saying that it "does not use accurate, professional and scholarly knowledge; is not based on science but a specific religious doctrine; does not further the public's understanding of the Grand Canyon's existence; [and] does not further the mission of the National Park Service." Meanwhile, the sale of the book became a matter of public controversy (see RNCSE 2004 Jan/Feb; 24 [1]: 4-5). Elders's review appeared in Eos (the weekly newsletter of the American Geophysical Union); the presidents of the American Paleontological Society, the American Geophysical Union, the National Association of Geoscience Teachers, the Association of American State Geologists, the Society for Vertebrate Paleontology, the American Geological Institute, and the Geological Society of America signed a joint letter to the NPS, urging that A Different View be removed "from shelves where buyers are given the impression that the book is about earth science and its content endorsed by the National Park Service" (see RNCSE 2004 Jan/Feb; 24 [1]: 19); and stories about the controversy appeared in the Los Angeles Times and The New York Times. A spokesperson for the NPS repeatedly assured the press and Congress that the promised review would be forthcoming.

In its December 28, 2006, press release, however, PEER charged, "Despite promising a prompt review of its approval for a book claiming the Grand Canyon was created by Noah's flood rather than by geologic forces, more than three years later no review has ever been done and the book remains on sale at the park." Jeff Ruch, executive director of PEER, commented, "As one park geologist said, this is equivalent of Yellowstone National Park selling a book entitled Geysers of Old Faithful: Nostrils of Satan." In a December 28, 2006, letter, PEER urged the new director of NPS, Mary Bomar, to remove the book from sale at the park's bookstores and museums as well as to "[p]rovide training to the interpretive staff at Grand Canyon NP regarding how to answer questions from the public concerning the geologic age of the Canyon and related matters; and ... [a]pprove an updated version of the long-stalled pamphlet 'National Park Service Geologic Interpretive Programs: Distinguishing Science from Religion' for distribution to agency interpretive staff." It ought to be noted that PEER was not accusing the NPS of forbidding its interpretive staff to present the scientific facts about the canyon's age and geology. Unfortunately, careless wording in its press release suggested otherwise, and PEER's credibility suffered as a result, obscuring PEER's important charge that the NPS is not providing its staff with the resources it needs to present the scientific facts about the canyon's age of geology effectively, especially when faced with park visitors who have questions about, or even embrace, views that reject those facts on religious grounds.

Prompted by PEER's press release, the controversy over the sale of A Different View began to attract attention again in the media, with the Arizona Daily Sun (2007 Jan 4) offering a report in which a spokesperson for the NPS was quoted as saying, "We do not use the creationist text in our teaching, nor do we endorse its content. However, it is not our place to censor alternate beliefs." The Sacramento Bee (2007 Jan 4) suggested, in a forceful and cogent editorial entitled "Don't use parks to promote creationism," "A new year and a new National Park Service director mark an opportunity for change. Here's an easy one. Settle the 3-year-old controversy about a creationist account of the Grand Canyon." The editorial argued that "Mary Bomar, the new National Park Service director, should send a message that programs and materials in national parks present the best scientific evidence and don't endorse any particular religious beliefs," and concluded by urging Bomar to do so quickly:

Remove the book from sale from within the park; its proper place is for sale in private bookstores outside the public park. Equally important, finish the long-delayed pamphlet ... and distribute it to park rangers. The nation's public parks are not the place to promote religious theories about the formation and development of Earth.

A spokesperson for the NPS, David Barna, told The New York Times (2007 Jan 5) that there was no formal review of whether the bookstores ought to discontinue selling A Different View in part because of differences among the NPS's specialists. According to the Times, "When officials got together to discuss the book, the geologists and natural resource specialists would say, 'Get this book out of here,' Mr. Barna said. 'But the education and interpretation people would say: 'Wait a minute. If your science is so sound, the fact that there are differences of opinion should not scare you away.'" In a written statement, the Times reported, Barna "notes that Park Service management policies require reliance on 'the best scientific evidence available' and, as a result, rangers tell visitors that "the Colorado River basin has developed in the past 40 million years." But the Times also reported, "the guidelines also say that material available from concessionaires in national parks should adhere to the standards used to evaluate Park Service materials." PEER's executive director Jeff Ruch was quoted as contending that selling the book promoted fundamentalist Christian views: "This is government establishment of religion in a fairly fundamental way, if you pardon the pun."

Ronald Bailey, the science columnist for Reason, heard NCSE's executive director Eugenie C Scott speak about the controversy at the James Randi Educational Foundation's event The Amazing Meeting V, and promptly went to Grand Canyon National Park to see A Different View for himself. He reports, "As I was buying it, I asked the clerk what she thought about it. 'We're not allowed to say anything about it,' she said covering her mouth with her hand in the 'Speak No Evil' monkey fashion. 'Oh come on,' I cajoled, but the clerk refused any further comment. Later I went in search of it at the other south rim Park Service bookstore at Desert View. In this much smaller bookstore, Vail's slender Flood geology volume was mixed in among the other photo books. Again, I asked this clerk what she thought, and she smiled and replied, 'All I will say is that it's got some really beautiful photographs'" (2007 Jan 26; available on-line at http://reason.com/news/show/118334.html). Acknowledging that the NPS-overseen bookstores carry books that present and discuss the creation myths of Native Americans, Bailey nevertheless drew the crucial distinction: "unlike books on native creation myths, Vail insists that he is making scientific claims about how rock layers are laid down, fossils formed and the canyon carved."